BNP Paribas WTA Finals: Singapore 2014 - Day One [Getty Images]

SINGAPORE - OCTOBER 20: Serena Williams of USA celebrates winning her match against Ana Ivanovic of Serbia dduring day one of the BNP Paribas WTA Finals tennis at the Singapore Sports Hub on October 20, 2014 in Singapore. (Photo by Julian Finney/Getty Images)

Getty Images Sport Julian Finney